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Answer:
15:6
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Step-by-step explanation:
The compounded ratio of the two ratios a : b and c : d
is the ratio ac : bd
And that of a : b, c : d and e : f
is the ratio ace : bdf.
- For ratios m : n and p : q;
the compound ratio is (m × p) : (n × q).
So, compound ratio of 3:7 and 1/4 : 5/6 is
3×1/4 : 7×5/6
ie, 3/4: 35/6
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